Fountain pen



Jam-12 192s.. 4

E. G. PEARSON FOUNTAIN PEN Filed sept. 16. 1922' la'. ITTHNEY Patented Jan. 12, 1926.

UNITED STATES .PATENT OFFICE.

ERIC G. PEARSON, 0F NEW YORK, N. Y., ASSIGNOR TC EAGLE PENCIL COMPANY, OF

" NEW YORK, N. Y., A. CORPORATION 0F DELAWARE.

FOUNTAIN PEN.

Application filed September 16. 1922. Serial No. 588,545.

made with a tubular casing or body con` taining a collapsible ink reservoir, and provided witha mechanism operable from the outside ot the casing for compressing the reservoir to force the air out of it so that when released the reservoir may act to suck in the ink. This pressing mechanism commonly includes a presser strip within the casing which may be forced against the reservoir by the short end of a lever operable through a slot in the casing wall. Various devices have been resorted to for providing a support for the fulcrum of this lever `and a mounting for the presser strip. In as` sembling such pens it has been necessary to iixy the fulcrum support in the casing separately from the presserA strip and itssupport and then to apply the lever from the outside of the casing and secure it to the fulcrum support. Such pens have, therefore, been comparatively expensive to manufacture owing to the amount of labor required to assemble them.

An object of they present invention is to provide pressing mechanism for self-filling fountain pens which may be assembled outside the casing and thereafter positioned within the casing by merely pushing it into the casing through the open end thereof.

A fountain pen embodying` the invention in the form which I now consider best is provided with pressing mechanism which includes a fulcrum sup orting strip provided with locking means or holding it in position when the pressing mechanism is pushed into the pen casing, a presser strip carried by t spring rod or strip extending forward from the locking means so that the presser strip is movable away from the supporting strip, and an operating lever pivoted on the supporting strip and operable to force the presser strip away from the supporting strip. The casing of the pen in which this pressing mechanism is seated is provided with a slot or aperture of suiiicientsize to permit the operatino lever to pass through it from the inside ci? the casing.

Other objects and advantages of the invention are hereinafter explained in connection with the detailed description of the specific embodiment of the invention which is illustrated in the accompanying drawings, in which Fig. 1 is a side view of a fountain pen embodyingthe invention, showing the casing sectioned on an axial plane passing through the center of the slot in the casing;

Fig. 2 is a view of the rear partof the pen looking toward the slot in the casing', and showing the casing partially sectioned on an axial plane at right angles to the section plane of Fig. 1;

Fig. 3 is an enlarged longitudinal sectional view of the pressing mechanism,

showing the normal position of the parts in full lines, and the pressing position in dotted lines; and

Fig. 4 is an enlarged transverse sectional view taken on the line 1 -4 of Fig. 1.

The fountain pen shown in the drawings includes a tubular body or casing 10, which may be made of metal or vother suitable material, a tubular nozzle 11 of hard rubber or other suitable material and of ordinary construction, and a pen point 12 and pen feeder 13 secured at the outer end of the nozzle. To the inner end oi the nozzle 11 is secured a collapsible ink bag or reservoir 14, of soft rubber or other suitable material,

which lies within the 'casing 10 when the nozzle 11. is inserted in the open end of the casing. The casing 10 is provided with a longitudinal slot 15 for the lever of the pressing mechanism enlarged at one end as shown at 16 to permit the passage of the finger tab on the end of the lever. The pen isshown in Fig. 1 as provided with the usual cap 17 to be secured on to the pen point end of the casing when the pen is not 1n useand adapted to be placed on the closed end of the casing when the pen is being used;

The pressing mechanism as shown 1 n the drawings includes a supporting strip 20 having a bent end or crook 21, and a fiat spring 30 also having a bent end or crook 31. The spring 30 extends beneath the support 20 and its crook 31 ,lies against the inner side ot, and is secured to, the crook 21 of the supporting strip, as hy means of lateral tabs 22 extendingl from the crook 21 and bent over und against the inner side of the crook 31. At least one ot' the crooks, the crook 31 as shown. is somewhat longer than the i11- side diameter ot the pen easing' so that when the pressing' meelmuism is pushed into the open end ot' the ousing' nud into position Within the easine' as shown in Fie'. l. the crooks will he tiered inward somewhat, to ward the main portions o the supporting strip and spi-ine'. The eroolcs thus uct as a looking;` ineens or member which having its end extending at an angle to and hearing against the easing Wall. on the side opposite the side :ieninst whieh the supporting strip is positioned. looks the pressing` mechanism in position Within the easing and holds the supiiiortinfr strip against the easing! Vall and the spring' normellv elose to the supporting strip.' The supporting` strip is somewhat wider than the slot 15 in the casingr l() and is provided with a. deifiendinp; tienne 24 nt each side nud it has a central slot Q e);- tending; inwardly trom its outer end and ot sullieient width to reeeive the operating lever.

i presser strip t0 is secured to the 'tree end ot the tlat spring` 30 hy which it is held ae'einst lateral displacement and normally7 held elose to the supporting' strip while heingr tree to he moved awa;Y therefrom meinst the yielding' force ot the spring. The operating lever 50 is pivotnll)T mounted on the supporting' strip 2.0 in such manner that when it is tipped with respect to the supporting strip it forces the presser strip uwny 'from the supportinf,r strip and toward the opposite side ot' the easing. The operatiner lever luis :it its outer end the usuel finger tah 51. sind the remainder' ot the lever .is ll-shaped having tivo depending tlanges 52. The teh 51 is small enough to poss through the enlarged end 1G of the easing slot while the rest of the lever is slightlv less in width than the slot 15. The lever is pivotullv secured in the slot of the supporting' strip h v a tulerum pin 53 Which passes through the tlanejes 52 o'l' the lever and the tlnnfres Q4 et the supporting strip.

For seeurine the presser strip Ll0 to the end otthe spring' 3U, it is provided near its middle with' liiterel tabs 41 which are bent over the end of the spring. Most desirahly the length of the spring' and the position of the tulerum pin 5S) in the supporting member 2O are such that the fuleruin pin lies a. little beyond the outer end of the spring and the tnhs 41.

A central ridge 43 is formed in the presser strip in front of the tabs 41 Where it is engaged hy the` end of the lever 50. The edges ot the flanges 52 of the lever 50 engage the presser strip on either side of this ridge,

relative displacement ot' these parts being thus prevented and the presser strip hemg strengthened.

The press-ine' meehauisui. haring! heen first eompleteliv Pendiled. is inserted in the open end o't the ensiiur i0 with the lient ends or eroolcs 2l. Ill, oit' the smiportinfr strip El() and spring lll in ndvanee. The pressing' meelninism is turned so as to hringr the operatine' lever in line with the slot 15 ol the ensimr. and is pushed in until the operating' lever is opposite the slot if und the eroolis rezu'h tho closed end ot the easing' or other stop. The looking' memher termed in' the Crooks ll und 31 heine; longer than the internal diflmeter ot the resine is lient or tiered ii'iwnrd :is the pressing' meehanism is pushed into the easine'. .T'leenuse ot the diret-tion in whieh the loelrine memher extends :md its tlertihilitjif, it does not prevent movement ot the pressing meelmnisn'l to its position within the easinff. hut it nets to etlieetuallv prevent movement in theopposite direftion. und 'when the press ine' nleehanism has heen pushed :ill the u'sijv in to its position within the, resine. the loi-l:- imr member nets to loelr the pressing' ineehu nism against movement toward the open end of the eusinfr and forros the suiniortinff strip Q0 outwurdli' against the inner Well o'l" the Gesine' :ind the snriiur lfl outwurdlv townrd the supporting' strip. The operntini'g' lever enters the slot 15 trom the inside und `the linger tali 51 passes through the enlnrirement 16. fitter the pressingr n'ieehunism has heen positioned within the easing. the inli.r hun lllseeured tothe end of the nozzle 11 is inserted in the easing'. und the inner end of the noz zle, the nozzle enrivinef the pen point and 'Feed har. is fitted into the open end of the eusinfr. The fountain pen is thus eompletelv assembled.

ln order to till the pen. the long end of the operntinq' lever 50 rnised hv menus of the :Entrer teh 5l.. thus eausinn: the short end of the lever to torce the presser strip 4 0 against the eollripsihle reservoir lll. i The turning' ot the lever 50 is :irrested `inst utter the lever passes dend renter hv engagement oli the short end of the lever with the outer end ot the spriner 20 and the tahs 41. The outer end of the tuhular nozzle ll is then inserted in the ink in the euston'lnr)7 manner and the operating; lever is turned hnelt to its normal position. thus releasing the inlr reservoir, which hv reason of its resiliencyr swells out and suelte in the ink.

It will he understood that the present uvention is entirelv independent o'l the type of tuhulnr nozzle. pen point. or pen feeder used. and that the expression fountain pen as used in the claims ineludes :my type of Writingr implement eontuiuinfr a collapsible reservoir tor holding the Writing fluid to which the invention is adapted. Furthermore, it is to he understood that the inventit) lli

lil)

cept in so far as specified in the claims which CTI ` bination with a tubular easing open at one follow.

What is claimed is: l. In a self-filling fountain pen, the cornend and having a longitudinal slot in the side thereof, and a collapsible ink reservoir in the casing, of pressing mechanism comprising a supporting strip having a longitudinal slot secured within the casing against the casing wall with its slot in alignment with the slot in the easing and having inwardly extending sideflanges of greater length than its slot, a presser strip normally held close to the supporting strip and Inovable away therefrom, and an operating lever pivotally mounted on a pin eXtending between said side flanges and movable in said slots to force the presser strip against the collapsible reservoir. y

2. In a self-iilling fountain pen, the combination with a tubular casing open at one end and having a longitudinal slot in the side thereof, and a collapsible ink reservoir in the casing, of pressing mechanism comprising a supporting strip within the casing having a longitudinal slot and having inwardly extending side flanges, means for Securing `said supporting strip in place and pressing it against the casing wall with its slot in alignment with the slot in the casing, a lia-t spring connected to the supporting strip and extending between said side flanges, a presser strip connected to said spring and normally held thereby in position close to the supporting stri D, and an operating lever pivotally mounte on a pin extending between said side flanges and movable in said slots to force the presser strip against the collapsible reservoir.

3. Pressing mechanism for self-iilling fountain pens, comprising a supporting strip having a straight portion with inwardly eX- tending side flanges and a longitudinal slot, a fiat spring normally extending between said side flanges, the ends of the supporting strip and spring beyond the side flanges of the supporting strip being bent over to form a resilient crook adapted to lock the supporting strip and spring within the pen casing and to hold the supporting strip against the side of the casing, a presser strip secured to the free end of the spring, and an operating lever pivotally mounted between said side flanges and movable in said slot to force the `presser strip away from the supporting strip.

1n testimony whereof I have hereunto set my hand.

ERIC G. PEARSON. 

